If your WordPress site gets hacked, it’s usually pretty obvious. More than likely, your website shows nothing but a message from the hacker, often accompanied by some loud music.
Luckily, in most cases, the damage done to the site is merely visual, and finding and replacing a couple of key files is enough to get the site back up and running. However, you should also take steps to find out where your site was vulnerable and resolve those issues to prevent it from happening again.
WordPress has an FAQ especially for all of this. Read it first and determine whether or not this is something you can deal with yourself. If not, give me a call. I’ve dealt with a number of these and can get your site back online quickly.